Cummins Automatic Voltage Regulator MX321 – Stable Power Control for Generator Performance
The Cummins Automatic Voltage Regulator (AVR) MX321 is a microprocessor-based excitation control unit designed for brushless alternators. As a trusted component within Cummins parts and Cummins genuine parts, the MX321 ensures consistent voltage output and generator stability, even under variable load conditions. It’s widely used in high-performance power systems where voltage accuracy and rapid response are essential.
🔩 Specifications
- Part Number: MX321
- Type: Automatic Voltage Regulator (AVR)
- Control Type: Digital, microprocessor-based
- Voltage Sensing: 3-phase, up to 300V AC
- Excitation Output: Up to 7A continuous, 15A for 10 seconds
- Compatibility: Designed for use with Cummins and other brushless AC generators
⭐ Key Features
- Provides fast and accurate voltage regulation in dynamic load conditions
- Built to Cummins genuine parts standards for quality and reliability
- Includes over-excitation and short-circuit protection
- Adjustable parameters for voltage, stability, and response rate
- Supports parallel operation with other generators using automatic synchronizing
⚙️ Technical Insights
The MX321 AVR uses digital control logic to regulate generator voltage with high precision. It senses output voltage and automatically adjusts the excitation to keep the voltage stable, even when load changes occur suddenly. The regulator also protects the alternator from voltage surges and overloads. Integrated features like soft start, over-voltage protection, and frequency compensation enhance system safety and performance. When paired with compatible Cummins parts, the MX321 maximizes generator efficiency and uptime.
🛠 Application Scenarios
- Standby and prime diesel generator sets powered by Cummins engines
- Industrial generators used in factories or data centers
- Commercial backup power systems requiring fast voltage response
- Remote site power generation where reliability is critical
- Any AC generator system using Cummins genuine parts for consistent output regulation
📦 Availability
This Cummins Automatic Voltage Regulator MX321 is in stock and available for global shipping.
To ensure correct fitment with your Cummins parts configuration, please provide your engine serial number (ESN). Our support team is ready to assist with verification.
